UltraFine 27US550

Released November 2024

LG's budget 27-inch 4K 60Hz IPS monitor in white, with HDR10, 90% DCI-P3 and a stand that adjusts for height and pivots, for everyday office and home use.

Size: 27″
Resolution: 3840 × 2160
PPI: 163
Panel: IPS
Refresh: 60 Hz
Brightness: 300 nits
HDR: –
USB-C power: –

Specifications

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Display

Screen size: 27″
Resolution: 3840 × 2160 (4K)
Sharpness: 163 pixels per inch
Panel: IPS
Refresh rate: 60 Hz
Response time (grey to grey): 5 ms
Brightness (typical): 300 nits
HDR formats: HDR10
Contrast ratio: 1,000:1
Colour range: 90% DCI-P3 (CIE 1976)
DCI-P3 coverage: 90%
Shape: Flat
Colour depth: 10-bit (8-bit + FRC), 1.07 billion colours
HDR detail: HDR10, HDR Effect
Response time detail: 5 ms GtG (Faster mode)
Viewing angles: 178° horizontal, 178° vertical (CR ≥ 10)
Pixel pitch: 0.1554 x 0.1554 mm
Eye care: Flicker Safe, Reader Mode, Color Weakness mode

Connections

Video inputs: 2 × HDMI 2.0, DisplayPort 1.4
USB-C charging: None
Ethernet: No
Speakers: No
HDMI detail: 2 x HDMI 2.0
DisplayPort detail: 1 x DisplayPort 1.4
Audio out: 3-pole headphone out (sound only)

Design

Stand adjusts: Height, tilt, swivel, pivot
VESA mount: Yes
Weight with stand: 6.8 kg
VESA pattern: 100 x 100 mm
Size with stand: 613.5 x 539.2 x 253.2 mm (W x H x D, raised)
Size without stand: 613.5 x 363.5 x 45.4 mm (W x H x D)
Weight without stand: 4.2 kg
Colours: White

Power and support

Power use: 25 W typical, 26 W maximum, less than 0.5 W sleep, less than 0.3 W DC off
Power supply: External adapter, 100–240 V AC, 50/60 Hz; 19 V 2.1 A (40 W)
Software: LG Switch, Dual Controller
In the box: Power adapter, HDMI cable (white, 1.5 m)

Pros and cons

Pros

4K on 27 inches (163 ppi) with 90% DCI-P3 and 10-bit colour (8-bit + FRC)
Stand adjusts for height, tilt, swivel and pivot
Two HDMI inputs and a DisplayPort 1.4 input

Cons

60Hz refresh rate
No USB-C, USB hub or speakers
300-nit typical brightness and 1000:1 contrast

Closest rivals

Model	Size	Resolution	PPI	Panel	Refresh	Brightness	HDR	USB-C power	Released
DellUltraSharp 27 4K Monitor (U2718Q)	27″	3840 × 2160	163	IPS	60 Hz	350 nits	–	–	2017
DellUltraSharp 27 4K USB-C Monitor (U2720Q)	27″	3840 × 2160	163	IPS	60 Hz	350 nits	400	90 W	Jan 2020
DellUltraSharp 27 4K USB-C Hub Monitor (U2723QE)	27″	3840 × 2160	163	IPS	60 Hz	400 nits	400	90 W	Mar 2022

Sources

Photo: lg.com

LG 27US550, Front view of 27" LG 4K UHD UltraFine™ IPS Monitor, White 27US550-W: LG, official UK product gallery
LG 27US550, side view: LG, official UK product gallery
LG 27US550, rear view: LG, official UK product gallery
LG 27US550, +15 degree side view: LG, official UK product gallery
LG 27US550, rear perspective view: LG, official UK product gallery
LG 27US550, front view: LG, official UK product gallery

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